<ion-nav-bar class="bar-positive" title="">
    <ion-nav-back-button class="button-icon ion-arrow-left-c">
    </ion-nav-back-button>
</ion-nav-bar>
<ion-nav-view>

</ion-nav-view>

<ion-footer-bar>
    <button class="grayBtn" style="width:50%" ng-click="preClick()">上一步</button>
    <button class="orangeBtn" style="width:50%" ng-click="nextClick()">下一步</button>
</ion-footer-bar>